Pipe-reamer



D. H. HOSEA & F. G. SCHULZE.

PIPE REAMER.

APPLlCATlON FILED FEB-5,1916- Patented Aug, 1, 1916.

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an rarnnir DUDLEY HENRY HOSEA AND FRANK GERI-IARDT SCI-IULZE, OF PORTAGE, WISCONSIN.

PIPE-REA1VIER.

Application filed February 5, 1916.

To all whom it may concern:

Be it known that we, DUDLEY H. Hose. and FRANK G. SoHULzn, both citizens of the United States, and residents of Portage, in the county of Columbia and State of l/Visconsin, have invented a new and Improved Pipe-Reamer, of which the following is a full, clear, and exact description.

This invention relates to reaming devices for pipes and has for an object the provision of an improved construction and arrangement adapted to be applied to a die stock so as to ream the pipe simultaneously with the cutting of the thread.

A further object in view is to provide a reaming device which may be used on the die stock either with or without the dies, the arrangement being such, that as the stock is rotated, the reaming structure will ream the interior of the pipe.

In the accompanying drawings: Figure 1 is a side view of a die stock and pipe together with an embodiment of the invention applied thereto, the parts being shown in operation; Fig. 2 is an enlarged detail perspective view of an embodiment of the invention removed from the die stock. Fig. 3 is a sectional view through one end of a pipe showing a bur arranged interiorly thereof and a cutter with part of the supporting bar shown in connection therewith, illustrating how the cutter will remove the bur when the die is backed off of the pipe.

Referring to the accompanying drawings by numeral, 1 indicates a pipe of any desired kind, on which is mounted a die stock 2, also of any desired kind. When cutting ordinary pipe with a pipe cutter, there is always formed a bur projecting inwardly. This bar must be removed either by manual reaming, filing or otherwise, either before or after the thread is out before the pipe is placed in position for use. According to the present invention, it is aimed to provide a structure which will cause the reaming of the pipe and the removal of this bur simultaneously with the cutting of the threads on the pipe. To this end, upstanding brackets 3 and 4t are provided which may be held in place on the stock 2 in any suitable manner, as for instance, by bolts 5 and 6, which hold the usual die members 7 and 8 in position. In case it should not be desired to thread the pipe, but simply to ream the same, the die members 7 and 8 are removed and the brack- Specification of Letters Patent.

Patented Au i, 191%.

Serial No. 76,397.

ets 3 and 4 clamped by the bolts or screws 5 and 6 directly to the stock. As shown in Fig. 1, the dies are in use and the brackets 3 and 4 are clamped thereto. The bracket 4 is preferably provided with a round aperture through which the threaded portion 8 of a bar 9 passes, so as to receive the adjusting nut 10, while the bracket 3 is provided with a squared or irregular aperture for accommodating the squared part of the bar 9. A set screw 11 is arranged in bracket 3 and is designed to engage bar 9 so as to clamp the same against movement whenever desired. This is to allow for using the same bar on different sized pipes. Extending downward from bar 9 is a cutter 12, which has an inclined or beveled cutting edge, whereby as the stock moves over the pipe, during the threading operation, the cutter will move inwardly and gradually widen the reamed portion, so'that the entire bur is removed by the time the proper length thread has been provided on the pipe.

It is, of course, evident that cutter 12 may be made integral with bar 9, or rigidly secured thereto and that the cutter is adjusted by properly adjusting the bar 9. This ad justment is provided by loosening the set screw 11 and by operating the nut 10, whereby the cutter may be adapted to ream pipes of different sizes simultaneously with the cutting of the thread thereon.

The cutter 12 is arranged at an angle so that the same will out during the threading operation as heretofore described, or if desired may be cut when the stock is backed oil, as shown more particularly in Fig. 3. An edge 13 is provided opposite edge 1 1, which edge engages the bur and removes the same when the stock is being removed. Nhen pipe 1 is comparatively small the same may have threads cut thereon and may be reamed simultaneously, but where the pipe is large the load of the added reaming operation is undesirable. However, by providing edge 18 the cutter 12 may be used in either position. When the same is used to ream upon the backing oif of the stock set screw 11 is loosened and also the screw 10 somewhat so that during the thread-cutting operation the cutter 12 will not operate, but after the threads have been cut the proper distance the bar 9 and cutter 12 are adjusted and members 10 and 11 are tightened. The die and stock are then rotated, backing the die off, Which will naturally cause the cutter 12 to engage and ream the burred end of the pipe.

WVhat We claim is 1. In a device of the character described, the combination With a stock and die for threading a pipe, of a reamer for reaming the pipe, said reamer being provided With an inclined cutter having a cutting edge on each side, and means for adjusting the cutter whereby either cutting edge of the cutter may be used, one edge acting as a reaming edge When the threads are being cut and the other edge acting as a reaming cutter when i the die is being backed off.

2. In a device of the character described, the combination with a stock and die for threading a pipe, of a reamer for reaming said pipe, said reamer being provided With a a pair of posts and adapted to be clamped Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

